I can try and put it in a fridge later this week! I'm sure as you push the sensor to the extremes it will deviate further.

The peripherals are meant to help you get started, I am thinking about offering the same board with different combinations of parts. That way you can order one without the motor driver or accelerometer for a cheaper price if it is just going to sit on your desk logging temperature all day.

As for the gpio, there is another post somewhere around here that I mentioned a U-shape breakout that makes it breadboard able. I'll edit the main post with another picture of that.

If all you want is a breadboard/ESP combo I wouldn't recommend this. It's not meant to be just a breakout for the ESP. It's meant to be the foundation of a more intricate project. Something you can design around and not worry about the bread boarding nightmares of wires everywhere. I can't count how many hours I've lost over the years trying to debug hardware only to find a jumper wire wasn't making contact with something.

Am I sure? No. I would expect them to. I need to think about a proper distribution channel a little more if this were to become a legitimate product. That being said, it's very exciting that people seem to like the design!

That's actually about spot on with what I was thinking of selling them for/what I had in mind. I was also thinking about offering one additional option which would be the bare board, and a parts kit. Was hoping I wasn't overpricing in my head